Hi
Not heard of ‘i1 publish’ although Flexi will import most popular file formats reasonably well; eps, ai, dxf, PDF, jpg, tif etc. Im sure you would be able to get a full list from the flexi website. However, we run illustrator alongside flexi as sometimes flexi doesn’t seem to get the file import right – gradient fills, colour conversions and we will tweak files in illustrator first. Flexi can also individually mask all objects or groups on import and you can spend ages individually unmasking everything before you can edit the imported file.
Hope that helps
Macky